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13 replies
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13 replies
Choice of chemical anchor or anchor grout?
now my holes in the wall are almost finished, and I will attach a ledger beam in them using M16 threaded rods.
But what material should I use to secure them in the concrete? I was set on anchor adhesive, but is it the same thing as chemical anchors? Which is best, and how is the anchor adhesive from Jula, Biltema, Bauhaus, etc...? Is it the same regardless of where you buy it?
But what material should I use to secure them in the concrete? I was set on anchor adhesive, but is it the same thing as chemical anchors? Which is best, and how is the anchor adhesive from Jula, Biltema, Bauhaus, etc...? Is it the same regardless of where you buy it?
Self-builder
· Arvika
· 1 527 posts
I think you should invest in somewhat "more expensive" stuff like Hilti's chemical anchors. The quality of the anchor mass is just as important as the rod.
It will probably do, although a much more sensible price at Hornbach.M Mogg said:
https://www.hornbach.se/shop/SIKA-AnchorFix-1-Ankarmassa/5021764/artikel-detaljer.html
And the borehole should be 2mm larger than the threaded rod? I have drilled with a 16mm drill and moved around towards the sides so the hole has become a bit larger. But it's hard to know how much larger... I have M16 as threaded rods.
Have used Essve ECM a couple of times, works very well and according to the description is supposed to be a bit more environmentally friendly. Would definitely go for 2-component compound
https://www.bauhaus.se/ankarmassa-e...YCh2tBA5MEAQYAyABEgI1ffD_BwE#full-description
https://www.bauhaus.se/ankarmassa-e...YCh2tBA5MEAQYAyABEgI1ffD_BwE#full-description
As previously mentioned, the hole should be 2 mm larger and the hole should be free from dust. There are special round brushes for cleaning, compressed air is also good.
All anchor masses are 2-component, it is important to skip the first that comes out! It does not have the correct mix, Hillti says 2 presses on a hand dispenser after the first comes out should not be used.
Shake or vibrate the rod so that the mass adheres to the thread and the concrete.
All anchor masses are 2-component, it is important to skip the first that comes out! It does not have the correct mix, Hillti says 2 presses on a hand dispenser after the first comes out should not be used.
Shake or vibrate the rod so that the mass adheres to the thread and the concrete.
Have a long air blow gun and have acquired a steel brush. However, the steel brush is 20mm and the holes around 18mm. Will try the brush and try to fix it if necessary.
By the way, I've come across Sika anchoring adhesive.
By the way, I've come across Sika anchoring adhesive.
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Another problem has arisen. I can't see how much compound I should fill in the holes as I go through the support beam during filling.
The holes are about 18mm in diameter and 16cm deep. The threaded rod is M16. How much compound is estimated for each hole??
The holes are about 18mm in diameter and 16cm deep. The threaded rod is M16. How much compound is estimated for each hole??
You should fill the hole about 2/3 with mass and then slowly press in the threaded rod while rotating it. It is important that you start filling from the bottom of the hole and outwards. For each pump, you pull out about 2cm. You don't want air pockets in the mass.
If you use hilti hit with the accompanying md2000, you can buy extension pipes.
You should not vibrate or shake the rod.
When you reach the bottom with the rod, some mass should have seeped through the hole. However, this will be difficult to control now since you have the beam in place.
What you can do is pump in mass, count the number of pumps, insert the rod according to the method above, then withdraw the rod and check that there is mass on the rod as far or a little further than the depth of your hole.
Reinsert the rod by adding an additional 2-3 pumps at the bottom of the hole and follow the method above.
If you use hilti hit with the accompanying md2000, you can buy extension pipes.
You should not vibrate or shake the rod.
When you reach the bottom with the rod, some mass should have seeped through the hole. However, this will be difficult to control now since you have the beam in place.
What you can do is pump in mass, count the number of pumps, insert the rod according to the method above, then withdraw the rod and check that there is mass on the rod as far or a little further than the depth of your hole.
Reinsert the rod by adding an additional 2-3 pumps at the bottom of the hole and follow the method above.
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